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HERFINDAHL INDEX: A measure of concentration of the production in an industry that's calculated as the sum of the squares of market shares for each firm. This is an alternative method of summarizing the degree to which an industry is oligopolistic and the relative concentration of market power held by the largest firms in the industry. The Herfindahl index gives a better indication of the relative market control of the largest firms than can be found with the four-firm and eight-firm concentration ratios.
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Lesson Contents
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Unit 1: Price Taker |
Unit 2: Short-Run Output |
Unit 3: Doing Graphs |
Unit 4: Long-Run Equilibrium |
Unit 5: Evaluation |
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Perfect Competition
- The first unit of this lesson, Price Taker, begins this study with a look at the general structure of a perfectly competitive market.
- In the second unit, Short-Run Output, we take a look at the short-run production decision faced by a perfectly competitive firm based on the cost and revenue numbers.
- The third unit, Doing Graphs, then looks at the short-run production decision faced by a perfectly competitive firm using a graphical analysis of cost and revenue.
- In the fourth unit, Long-Run Equilibrium, we examine the nature of long-run adjustment by a perfectly competition industry when all inputs are variable.
- The fifth and final unit, Evaluation, then closes this lesson by considering the pros and cons of a perfectly competitive industry.
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FOURTH ESTATE Another term for journalists, reporters, and other members of the media. This is one of four divisions of society based on economic function. The other three are government as the first estate, businesses as the second estate, and consumers as the third estate.
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GRAY SKITTERY [What's This?]
Today, you are likely to spend a great deal of time flipping through mail order catalogs trying to buy either a coffee cup commemorating the moon landing or a how-to book on surfing the Internet. Be on the lookout for florescent light bulbs that hum folk songs from the sixties. Your Complete Scope
This isn't me! What am I?
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The wealthy industrialist, Andrew Carnegie, was once removed from a London tram because he lacked the money needed for the fare.
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"Sometimes when you innovate, you make mistakes. It is best to admit them quickly and get on with improving your other innovations. " -- Steve Jobs, Apple Computer founder
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TSE Tokyo Stock Exchange
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